Clearing and Grubbing specification and methods | Clearing and Grubbing road construction

CLEARING AND GRUBBING

Description:

This work shall consist of clearing, grubbing, removing and disposing of items, debris and other objectionable matter from within the limits of right of way and easement areas, except vegetation designated to remain or to be selectively treated.

Construction Requirements

General:

The engineer will designate all trees, shrubs, plants and other objects that are to remain.  All designated items shall be preserved.  Any damage to natural terrain, vegetation or objects designated to remain shall be repaired or replaced, as determined by the engineer, at the contractor's expense.

Clearing and Grubbing:

Unless otherwise specified in the contract documents, the entire length of the project shall be cleared and grubbed to the limits and requirements specified.  Clearing and grubbing shall include removal of all trees, stumps, roots and any objectionable matter resting on or protruding through the surface of the original ground, except for those items designated to remain.

Clearing:

The area for clearing shall be within the following limits:

(a)  Highway construction areas on the right of way or right of way easements, including structures, frontage roads, streets, ramps, approaches, ditches, channels and all other access roads, connections and incidental items that are to be constructed.  These areas shall extend 10 feet outside of construction lines, or to the right of way limits if less than  10 feet.

(b)  Material sites within the right of way or right of way easements.

(c)  Areas enclosed by interchange loops and ramps.

(d)  Site distance areas for intersecting routes.

Limits of Grubbing:

Within the limits of the cut areas, grubbing shall be performed to a minimum depth of 18 inches below the finished earth grade of roadways, ditches, channels, borrows and structures.  The areas below the natural ground surface shall be grubbed to a depth necessary to remove all stumps, roots, buried logs and other objectionable material.  In embankment areas, undisturbed stumps and roots extending no more than 6 inches above the ground line may remain, provided the stumps and roots are a minimum of  4 feet below the finished earth grade.  Except in areas to be excavated, holes created by removals shall be backfilled with suitable material and compacted to the approximate density of the adjacent area.

Selective Clearing and Grubbing:

All areas outside the limits designated for clearing and grubbing, but on the right of way, shall be free of unsightly vegetation, debris and other objectionable matter.  In lieu of grubbing, undisturbed stumps outside the slope stake limits and in movable areas may be cut to a maximum height of 3 inches above the ground. Low hanging, unsound or unsightly branches on trees or shrubs designated to remain shall be removed as directed by the engineer.

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Scalping:

The contractor shall scalp all areas where excavation or embankment is to be performed, except mowed or burned over sod may remain where the embankment to be constructed is at least 4 feet above natural ground.  Scalping shall include the removal of surface material such as sod, grass, residue of agricultural crops, sawdust and any other vegetative matter without removing more earth than is necessary.

National Forest Land:

Before beginning work on a highway to be constructed over national forest land, the contractor shall obtain information from the forest ranger in charge to determine rules and regulations covering construction procedures and shall follow those requirements.  Before any fires are set, the contractor shall notify the forest ranger in charge, and shall secure a burning permit.

Removal and Disposal of Material

The contractor shall dispose of all trees, stumps, brush, roots and all other objectionable matter removed in the clearing and grubbing process.

Open Burning:

The contractor shall not be allowed to conduct open burning except for small quantities as approved by the engineer or as described in the contract.  In lieu of open burning the contractor shall make efforts to harvest marketable timber, utilize mulched timber for erosion control and utilized excess mulch for composting.  Open burning in incorporated areas will be permitted only under a permit or waiver from MDNR.  The contractor shall obtain all necessary permits and approvals before open burning is initiated, and shall comply with permit conditions, MDNR regulations, and all laws in accordance.  A contractor representative shall be present during all burning.  Measures shall be taken to ensure that structures or vegetation on adjacent property, or items designated to remain on the right of way, shall not be jeopardized.  Fires set for the purpose of training fire fighters and industrial employees in fire fighting methods may be permitted after coordination with MDNR or local fire departments, and shall be in strict accordance with NASPK standards.

Disposal of Wood:

Burial of stumps and debris will not be permitted on the right of way.  Products of clearing and grubbing may be removed from the right of way and disposed of out of sight from the roadway, provided there is no conflict with governing regulations for the wasted material.  A signed, written agreement with the property owner shall be submitted by the contractor to the engineer prior to the disposal of material on that property.

Disposal of Scalping:

The products of scalping shall be deposited at the toe of embankments where such areas are available within the limits of the roadway balance affected.  If such areas are not available, the products shall be neatly and uniformly deposited on the right of way in such a manner that no drainage will be blocked.

Disposal of Timber:

Except in national forest areas, all timber that has not been removed from the right of way prior to construction and is not designated to remain in place shall become the property of the contractor.

METHOD OF MEASUREMENT

The number of hectares of “Clearing and Grubbing” for which the Contractor will be paid will be derived from measurements made by the Engineer of the area staked out by him, and actually cleared and grubbed.

The volume of material removed during grubbing operations will be measured and paid for as Topsoil Excavation.

BASIS OF PAYMENT

Clearing and grubbing will be paid for at the unit price per hectare set forth in the Contract for “Clearing and Grubbing” which will be payment in full for performing all operations necessary or incidental thereto

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